稀土6-甲基皮考林酸氮氧化物及2,2'-联吡啶N,N'-二氧化物三元配合物的合成与性质  

Preparation and Properties of Ternary Complexes of Rare Earth with 6-methyl-2-picolinic Acid N-Oxide and 2,2'-Bipyridine N,N'-Dioxide

作　　者：刘世芳 阎兰[1] 杨汝栋[1] 

机构地区：[1]兰州大学化学化工学院无机化学研究所,甘肃兰州730000

出　　处：《中国稀土学报》2000年第1期9-13,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金! ( 2 9571 0 3 ) ;教育部高等学校博士点基金! ( 9573 0 0 5);兰州大学化学化工学院青年教师科研启动基金

摘　　要：合成了稀土与 6 甲基皮考林酸氮氧化物 (HL)及 2 ,2′ 联吡啶 N ,N′ 二氧化物 (bipyO2 )的三元固体配合物LnL3bipyO2 ·nH2 O(Ln =La3+ ,Sm3+ ,Eu3+ ,Gd3+ ,Tb3+ ,Dy3+ ,Yb3+ )。元素分析、差热 热重分析、红外光谱、摩尔电导及X射线粉末衍射等分析结果表明 :配合物的组成为 {Ln(C7H6 O3N) 3·(C10 H8N2 O2 )·H2 O}(n -1 )H2 O(n =2 5～ 3 0 )。荧光光谱表明 :三元配合物LnL3bipyO2 ·nH2 O的荧光强度比二元配合物LnL3·mH2 O的要弱 ,与二元配合物不同的是 :TbL3bipyO2 ·3H2 O在 4 89 3nm处峰的相对强度比 543 8nm处峰的相对强度要强。The solid complexes of triavlent rare earth(La, Sm, Eu, Gd, Dy, Tb and Yb) with 6 methyl 2 picolinic acid N oxide and 2,2′ bipyridine N,N′ dioxide were prepared. They were characterized by elemental analysis, thermogravimetric(TG) and differential thermal analysis(DAT), infrared spectra(IR), molar conductance as well as X ray diffraction and their luminescnece properties were studied. All results indicate that the luminescnece intensity of ternary complexes is weaker than that of binary complexes, and that the ligand bipyO 2 enchances the luminescence intensity at 489.3 nm while decreasing its value at 543 8 nm in ternary complex TbL 3 bipyO 2·3H 2O.

关 键 词：联吡啶 二氧化物 三元配合物 稀土配合物 

分 类 号：O614.33[理学—无机化学] O641.4[理学—化学]